Not many ideas with this theme so I will probably have some fun programming a boring 3D "working simulator" where you harvest a field with a sickle.

Probably i will add some written fact, poetry, or reflection on the side to make the game at least somewhat interesting.

Real time day night cycle? Maybe a reality mode where you can harvest the field only in real life June (or appropriate season for your latitude)

Yea... definitely non a fun game, but there is a little room for me to go back to my experimental side